Vodacom

I have had a good relationship with Vodacom, they have been the only network I've used since I first got a cellphone. However I was recently due for an upgrade and was contacted by the call centre. Upon receiving the call they advised me that I was in fact due for 2 upgrades. When I asked them for the 2nd number I realised that it was a number that I had cancelled 2 years ago. When I had asked the agent she said that it was never cancelled. I requested that a record of the call be retrieved and my money be paid back for these past 2 years. They advised me that it would be taken up and investigated. This was more than a month ago. I have called Vodacom numerous times after this to get feedback and kept been advised that someone would contact me. I have yet to be contacted and yet to get feedback. Unhappy Loyal Vodacom Customer.